Cafe/Cafe2/AddWindows/AddOrderWindow.xaml

<Window x:Class="Cafe.AddWindows.AddOrderWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Cafe.AddWindows"
        mc:Ignorable="d"
        Title="Новый заказ" Height="900" Width="1600" WindowStartupLocation="CenterScreen" ResizeMode="CanMinimize">
    <Grid>
        <ListBox Name="DishesList" VerticalAlignment="Top" HorizontalAlignment="Center" Width="1500" Height="450"
                 ScrollViewer.VerticalScrollBarVisibility="Disabled" ScrollViewer.HorizontalScrollBarVisibility="Auto" SelectionChanged="DishesListSelectionChanged" Margin="0,100,0,0" d:ItemsSource="{d:SampleData ItemCount=5}">
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <VirtualizingStackPanel IsItemsHost="True" Orientation="Horizontal"/>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Name="DishStack">
                        <Image Source="{Binding Picture}" Width="250" Height="250"/>
                        <Label Content="{Binding Name}" Width="250" Foreground="White" FontSize="25" Height="50"/>
                        <Label Content="{Binding Price}" Width="250" Foreground="White" FontSize="25" Height="50"/>
                        <Button Content="Убрать" Width="250" FontSize="25" Height="50" Click="DeliteDishClick"/>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
        <Button x:Name="BackButton" Content="Назад" HorizontalAlignment="Left" Margin="20,17,0,0" VerticalAlignment="Top" Height="39" Width="140" FontSize="25" Click="BackButtonClick"/>
        <Label Content="Сумма:" Foreground="White" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="36" Height="60" Margin="1225,685,0,0"/>
        <Label Name="SumOfOrder" Content="0" Foreground="White" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="36" Height="60" Margin="1352,685,0,0" Width="200"/>
        <Button Name="AddDish" Content="Добавить блюдо" HorizontalAlignment="Left" VerticalAlignment="Top" Height="60" Width="300" FontSize="36" Click="AddDishClick" Margin="53,687,0,0"/>
        <Button Name="ToOrder" Content="Сделать заказ" HorizontalAlignment="Center" VerticalAlignment="Top" Height="60" Width="250" FontSize="36" Click="ToOrderClick" Margin="0,792,0,0"/>
        <ComboBox x:Name="DishesBox" Height="60" Width="450" HorizontalAlignment="Left" Margin="400,687,0,0" VerticalAlignment="Top" Foreground="Black" FontSize="36"/>
        <ComboBox x:Name="TablesBox" Height="60" Width="450" HorizontalAlignment="Left" Margin="400,589,0,0" VerticalAlignment="Top" Foreground="Black" FontSize="36"/>
        <Label Content="Столик:" Foreground="White" HorizontalAlignment="Left" VerticalAlignment="Top" FontSize="36" Height="60" Margin="266,589,0,0"/>
    </Grid>
</Window>